Dr. Nicholas Henricksen is an Associate Professor of Spanish Linguistics at the University of Michigan. His research focuses on issues in the phonetics and phonology of different varieties of Spanish from a theoretical perspective, employing laboratory methods to validate my claims. His earliest publications focused on question intonation in Peninsular Spanish, working primarily within the autosegmental-metrical framework of intonational structure. More recently, he has begun to explore sociophonetic variation in Manchego Spanish (spoken in south-central Spain) and in Andalusian Spanish (spoken in southern Spain). He is interested in understanding the linguistic factors that differentiate the Western and Eastern sub-varieties of Andalusian Spanish.